CFC and HCFC-free rigid insulating foams having low-K factors an

Details CFC and HCFC-free rigid insulating foams having low-K factors an CFC and HCFC-free rigid insulating foams having low-K factors an

1993-10-26

1995-01-24

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521172, C08J 914

Patent

active

053843380

ABSTRACT:
Polyurethane/polyisocyanurate foams with low K-factors and enhanced flammability properties as measured by the Butler Chimney test are produced through the use of a blowing agent composition comprising aliphatic hydrocarbon and a fully halogenated brominated halocarbon is a mole ratio of from 10:1 to 1:2.

REFERENCES:
patent: 3920587 (1975-11-01), Watkinson
patent: 3922238 (1975-11-01), Narayan et al.
patent: 4581384 (1986-04-01), Marion
patent: 5089534 (1992-02-01), Thoen et al.
patent: 5102918 (1992-04-01), Moriya

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